Trtjuk-lock



i' b. lf l UTE E. L. GAYLORD, OF TERRYVILLE, CONNECTICUT.

TRUNK-LOCK.

Specification of Letters Patent No. 24,113, dated May 24, 1859.

To all whom 'it may concern.'

Be it known that I, E. L. GAYLORD, of Terryville, in the county of Litchfield and State of Connecticut, have invented a new and Improved Trunk-Lock; and I do hereby declare that the following is a full, clear, and exact description of the same, reference being had to the annexed drawings, making a part of this specification, in which- Figure 1, is a front view of my invention, the front plate of the case being removed in order to show the construction and arrangement of parts. Fig. 2, is a transverse section of the same, taken in the line x, a, Fig. 1.

Similar letters of reference indicate corresponding parts in the two figures.

This invention relates to an improvement in those of chest, desk and trunk locks in which the link or hasp enters the lock by closing the lid or top. An objection to this class of lock has existed from the fact that an accidental falling of the top or lid while the bolt was thrown forward or in a locked state was almost certain to break or injure the lock.

The within described invention consists in arranging the bolt of the lock with a tumbler and spring substantially as hereinafter shown and described, whereby any injury to the lock from the accidental falling of the lid is effectually prevented.

To enable those skilled in the art to fully understand and construct my invention I will proceed to describe it.

A, represents the case of the lock, which may be of the usual or any suitable form.

B, is the bolt which may be of the usual form and fitted on stumps or guides a, a, the recesses b, b, however in which the stumps or guides a, tit are wider than usual, considerably wider than the stumps as shown clearly in Fig. 1. Against the under side of the bolt B, two springs c, c, bear, one near each end. These springs have a tendency to keep the bolt shoved upward so that the lower edges of the recesses b, b, will press against the stumps a, a. Behind the bolt 1B, and between it and the back plate of the case A, a tumbler C, is placed, on a pivot d, the tumbler being allowed to work freely on the pivot. This tumbler may be of the usual form and it has a projection e, on it as usual which fits in a slot f, in the bolt, said slot having a projection g, in it to serve as a stop.

D, is a spring one end of which bears against a projection ax, on the bolt B, and the other end against the tumbler C. This spring D, has a tendency to keep thevbolt B, thrown forward or in a locked state, and it also has a tendency to keep the tumblers C, down so that its projection e, will bear on the bottom of the slot E, E, represent links which are attached as usual to a plate F, that is secured to the lid of the trunk. The links E, E, when the lid is closed lit in slots in the case A, and underneath catches 7L, 7L, on the bolt B, as shown clearly in both drawings.

The operation is as follows: When the lock is in a locked state as shown in Fig. 1, it. is unlocked in the usual way, the bit i, of the key Cr, first raising the tumbler C, and throwing its projection e, above the projection g, in the slot f, the bit z', then acting on the bolt B, and throwing it back. This operation is precisely the same as the ordinary tumbler lock. When the lock is in a locked state and the lid of the trunk raised, the lock will lock itself, for the links E, E, will strike the projections la, h, and first throw down the bolt B, as shown in blue so that the projection g, will pass below the projection c, on the tumbler C, the links E, then, in consequence of their rounded form, throw back the bolt and when'the links E, E, pass below the catches h, h, the latter are thrown over the links by the spring D.

I do not claim the tumbler C, and bolt B, separately or in themselves considered, for such is an old device and-well known as a tumbler bolt or lock; but,

I do claim as new and desire to secure by Letters Patent,

The arrangement of the bolt B, with the springs 0, c, D, and tumbler C, to operate substantially as and for the purpose herein set forth.

E. L. GAYLORD.

Witnesses JAMES TERY, N. T. BALDWIN. 

